Pipe-forming plant



July 17, E923- D. L. WILLIAMS PIPE FORMING PLANT 2 Sheets-Sheet 2uF'iled May 19, 1920 l 61H0: um) Y mini@ l Innen/tov To all whomct mayPatented July 17, 1923.

4'r1iut-roniirilve rLAN'r.

Apiiiianon med 'May' 19, 1920. seriai'no. 382,472.

concern.' Be it known that I, Davie L. citizenof the United States,residing at semer, in the county of Jefferson and State a of Alabama,have invented certainv new and useful Improvements in Pipe-FormingPlants, of which the following isr a specification. l

This invention relates to pipe forming male chines, and it comprises aturntable adapted to receive moulding flasks, a sand chute arp rangedabove said turntable, whereby a flask arranged thereon may be turned tothe proper position and filled with sand, the flasks being rammed whileon said turntable, a conveyor table for receiving said flasks, ashakeout hopper arranged near said conveyor, said conveyor being adaptedto `deliver the flasks to said hopper after the flasks have been poured,a second conveyor for returning said flasks to the turntable, and aconveyor hopper to a sand bin arranged near said chute; all as morefully hereinafter set forth and as claimed.

In the present invention, I have devised an apparatus for pipe makingwherein a turntable is employed, the turntable being adapted to receiveflasks for making pipes of ifferent sizes or diameters, and is soarrange that any of the flasks may be turned to the proper position forreceiving the moulding sand from a sand chute. Vhen the necessary amountof sand has been delivered to the ask, the flow of sand from the chutemay be cut ofi` and the flask turned to another position to permitfilling of a second flask. The flasks are removed from the turntableafter they have been rammed by an overhead crane and carried to one oftwo conveyor tables. When a sufficient number of liasks have beenarranged on one of the conveyor tables, the metal is poured and theflasks conveyed to a shakeout hopper arranged near the end of the table.The moulded pipe is separated from the sand, the sand being returned toa bin from which it is fed to the hopper. Vhile one of the conveyortables is receiving flasks which have been filled with sand, the emptyflask from the other conveyor table may be returned to the turntable.

In the accompanying drawings, I have shown one embodiment of theinvention. In this showing,

WILLIAM-s, ab'.

Be'svform supports for returning the sand from thev Figure 1 is al planview of the apparatus. Figure 2 is a side elevation thereof. Figure 3isa plan view of the turntable.

v Figure 4l isa vertical sectionalview of the turntable, and" l A Figure5 isa transverse vertical sectional view onthe line 5*'-5 of Figure .1Q

Referring 'to the drawings, comprises a base 1 which may cured to anyfoundation as at 2, and which is rovided with a central pin or shaft 3upon which the rotating portions of the turntable are mounted. As shown,a plurality of arms l are arranged on the upper section of theturntable, and these arms are adapted to for the moulding Hasks. Each ofthe arms is provided with plates or flanges 5 arranged at the sides andadapted to hold the flasks. in position. Asand chute 6 is arrangedimmediately above the turntable. As shown in Figure 1, the chute is sopositioned that sand may be delivered to a flask arranged on one of thearms of the turn table. The chute may be provided with suitable cutoffmechanism (not shown) to control the flow of sand. An elevator 7communicates with the upper end of the chute and delivers sand thereto.This elevator receives the sand from a sand screen 8 which dcommunicates with a sand bin (not shown).

A guide plate 9 is arranged beneath the screen and is adapted to deliverthe sand to the elevator.

Arranged near the turntable is a pair of conveyor tables 10 and 11. Anoverhead crane 12 is adapted to convey the flasks from the turntables tothe conveyor tables. As shown, the overhead crane travels on a track 13arranged over the two conveyor tables and one of the arms of theturntable. Any type of overhead conveyor may be employed an as shown` itis provided with a trolley wheel 14 and suitable holding means 15 tograsp the flasks and hold them while carried to the conveyor tables.

A shakeout hopper 16 is arranged near each of the conveyor tables. Theshakeout hoppers are provided with a perforated top shown as a grating17, and a screw conveyor 18 is arranged in eah of the hoppers. sandreturn pipe 19 is in communication with the hoppers through branch pipe20, and the sand is adapted to be returned to the sand bin through thisreturn pipe. In the drawings, I have shown the return pipe commuthe besuitably se-zthey are being .nCatiDg-fwitbtoely 91.165,01? the.hepprebet it What, lllaimviss,

1S apparenti that 'an yordinary branch pipe Ixnptipejoeieg Fleet@ mlsiegPlat- -20 k connection may be arranged between,l the form comprlslngabase, a turntable mounted other hopper andthe pipn19. The sand s torevolveon said base, said turntable comconveyed through pipe 1-9" by anysuitable prisi-nga hub,'andl-ap1uralty of radial arms means. In thepresent instance, I have,A dis,- GXQDQI! therefrom; Saida'ms. being ofSub' closed the use of compressed air for return! 'stantia'lly 'uniformWldth and adapted to sup- 25 ing the sand. As shown, ab compressed port,molding and retaining means pipe 2l s connected to thesand return pipe,comprising plates secured tothe sides of said @ir under:pressureibeinesuppliedo the-pip@ arms and projectlle @bere-the. Surfe,Seid "21 from anys aleseurce L ,Pletebeing;adapbedf9--qnteetwithrhe-Sies Although If haya p1=efr`1fdtemb-0dment of, intentie@ it iSlhttstileeny whereof 1,; aix my Signature.' to be understood thatvarious changes'in ttl-1e,` inY` presence: oQfgizlyWvov'Wltgflessesq p lshape,size,,andfanrangementot pants-,may be 1 v DAVID- L, WILLIAMSyresorted t0 Witholltfdpatng.fmmthespirit Witnesses; tot'thezinuentinnprther-seep@Qf-thesuhjoined W. S. BLUE,

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